Z-one Relay 3 Zone Valve Control Wired Thermostat Item #1: SH-12 thru SH-36

Item #1: SH-12 thru SH-36

Alpine 210B

providing temperature data to associated devices

Item #4: SH-19

FREEZE PROTECTION

Z-one Relay 3 Zone Valve Control Wired Thermostat Item #1: SH-12 thru SH-36Relay (multi zone) The ZVR series is a multi zone valve relay and boiler operating control for multiple zone hydronic heating systems. The ZVR series interfaces with low voltage thermostats or any other low voltage controllers having a switching action. The ZVR series controls up to 3, 4, 5 or 6 zones, depending on model selected. In addition, a system circulator pump and secondary pump is turned on whenever any zone calls for heat. LED indicators